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##
# A semi-compatible DSL for the Bundler Gemfile and Isolate formats.
class Gem::RequestSet::GemDependencyAPI
ENGINE_MAP = { # :nodoc:
:jruby => %w[jruby],
:jruby_18 => %w[jruby],
:jruby_19 => %w[jruby],
:maglev => %w[maglev],
:mri => %w[ruby],
:mri_18 => %w[ruby],
:mri_19 => %w[ruby],
:mri_20 => %w[ruby],
:mri_21 => %w[ruby],
:rbx => %w[rbx],
:ruby => %w[ruby rbx maglev],
:ruby_18 => %w[ruby rbx maglev],
:ruby_19 => %w[ruby rbx maglev],
:ruby_20 => %w[ruby rbx maglev],
:ruby_21 => %w[ruby rbx maglev],
}
x86_mingw = Gem::Platform.new 'x86-mingw32'
x64_mingw = Gem::Platform.new 'x64-mingw32'
PLATFORM_MAP = { # :nodoc:
:jruby => Gem::Platform::RUBY,
:jruby_18 => Gem::Platform::RUBY,
:jruby_19 => Gem::Platform::RUBY,
:maglev => Gem::Platform::RUBY,
:mingw => x86_mingw,
:mingw_18 => x86_mingw,
:mingw_19 => x86_mingw,
:mingw_20 => x86_mingw,
:mingw_21 => x86_mingw,
:mri => Gem::Platform::RUBY,
:mri_18 => Gem::Platform::RUBY,
:mri_19 => Gem::Platform::RUBY,
:mri_20 => Gem::Platform::RUBY,
:mri_21 => Gem::Platform::RUBY,
:mswin => Gem::Platform::RUBY,
:rbx => Gem::Platform::RUBY,
:ruby => Gem::Platform::RUBY,
:ruby_18 => Gem::Platform::RUBY,
:ruby_19 => Gem::Platform::RUBY,
:ruby_20 => Gem::Platform::RUBY,
:ruby_21 => Gem::Platform::RUBY,
:x64_mingw => x64_mingw,
:x64_mingw_20 => x64_mingw,
:x64_mingw_21 => x64_mingw
}
gt_eq_0 = Gem::Requirement.new '>= 0'
tilde_gt_1_8_0 = Gem::Requirement.new '~> 1.8.0'
tilde_gt_1_9_0 = Gem::Requirement.new '~> 1.9.0'
tilde_gt_2_0_0 = Gem::Requirement.new '~> 2.0.0'
tilde_gt_2_1_0 = Gem::Requirement.new '~> 2.1.0'
VERSION_MAP = { # :nodoc:
:jruby => gt_eq_0,
:jruby_18 => tilde_gt_1_8_0,
:jruby_19 => tilde_gt_1_9_0,
:maglev => gt_eq_0,
:mingw => gt_eq_0,
:mingw_18 => tilde_gt_1_8_0,
:mingw_19 => tilde_gt_1_9_0,
:mingw_20 => tilde_gt_2_0_0,
:mingw_21 => tilde_gt_2_1_0,
:mri => gt_eq_0,
:mri_18 => tilde_gt_1_8_0,
:mri_19 => tilde_gt_1_9_0,
:mri_20 => tilde_gt_2_0_0,
:mri_21 => tilde_gt_2_1_0,
:mswin => gt_eq_0,
:rbx => gt_eq_0,
:ruby => gt_eq_0,
:ruby_18 => tilde_gt_1_8_0,
:ruby_19 => tilde_gt_1_9_0,
:ruby_20 => tilde_gt_2_0_0,
:ruby_21 => tilde_gt_2_1_0,
:x64_mingw => gt_eq_0,
:x64_mingw_20 => tilde_gt_2_0_0,
:x64_mingw_21 => tilde_gt_2_1_0,
}
WINDOWS = { # :nodoc:
:mingw => :only,
:mingw_18 => :only,
:mingw_19 => :only,
:mingw_20 => :only,
:mingw_21 => :only,
:mri => :never,
:mri_18 => :never,
:mri_19 => :never,
:mri_20 => :never,
:mri_21 => :never,
:mswin => :only,
:rbx => :never,
:ruby => :never,
:ruby_18 => :never,
:ruby_19 => :never,
:ruby_20 => :never,
:ruby_21 => :never,
:x64_mingw => :only,
:x64_mingw_20 => :only,
:x64_mingw_21 => :only,
}
##
# A set of gems that are loaded via the +:git+ option to #gem
attr_reader :git_set # :nodoc:
##
# A Hash containing gem names and files to require from those gems.
attr_reader :requires # :nodoc:
##
# A set of gems that are loaded via the +:path+ option to #gem
attr_reader :vendor_set # :nodoc:
##
# The groups of gems to exclude from installation
attr_accessor :without_groups # :nodoc:
##
# Creates a new GemDependencyAPI that will add dependencies to the
# Gem::RequestSet +set+ based on the dependency API description in +path+.
def initialize set, path
@set = set
@path = path
@current_groups = nil
@current_platform = nil
@current_repository = nil
@default_sources = true
@git_set = @set.git_set
@requires = Hash.new { |h, name| h[name] = [] }
@vendor_set = @set.vendor_set
@gem_sources = {}
@without_groups = []
end
##
# Adds +dependencies+ to the request set if any of the +groups+ are allowed.
# This is used for gemspec dependencies.
def add_dependencies groups, dependencies # :nodoc:
return unless (groups & @without_groups).empty?
dependencies.each do |dep|
@set.gem dep.name, *dep.requirement
end
end
private :add_dependencies
##
# Finds a gemspec with the given +name+ that lives at +path+.
def find_gemspec name, path # :nodoc:
glob = File.join path, "#{name}.gemspec"
spec_files = Dir[glob]
case spec_files.length
when 1 then
spec_file = spec_files.first
spec = Gem::Specification.load spec_file
return spec if spec
raise ArgumentError, "invalid gemspec #{spec_file}"
when 0 then
raise ArgumentError, "no gemspecs found at #{Dir.pwd}"
else
raise ArgumentError,
"found multiple gemspecs at #{Dir.pwd}, " +
"use the name: option to specify the one you want"
end
end
##
# Loads the gem dependency file
def load
instance_eval File.read(@path).untaint, @path, 1
end
##
# :category: Gem Dependencies DSL
# :call-seq:
# gem(name)
# gem(name, *requirements)
# gem(name, *requirements, options)
#
# Specifies a gem dependency with the given +name+ and +requirements+. You
# may also supply +options+ following the +requirements+
def gem name, *requirements
options = requirements.pop if requirements.last.kind_of?(Hash)
options ||= {}
options[:git] = @current_repository if @current_repository
source_set = false
source_set ||= gem_path name, options
source_set ||= gem_git name, options
source_set ||= gem_github name, options
return unless gem_platforms options
groups = gem_group name, options
return unless (groups & @without_groups).empty?
pin_gem_source name, :default unless source_set
gem_requires name, options
@set.gem name, *requirements
end
##
# Handles the git: option from +options+ for gem +name+.
#
# Returns +true+ if the path option was handled.
def gem_git name, options # :nodoc:
if gist = options.delete(:gist) then
options[:git] = "https://gist.github.com/#{gist}.git"
end
return unless repository = options.delete(:git)
pin_gem_source name, :git, repository
reference = nil
reference ||= options.delete :ref
reference ||= options.delete :branch
reference ||= options.delete :tag
reference ||= 'master'
submodules = options.delete :submodules
@git_set.add_git_gem name, repository, reference, submodules
true
end
private :gem_git
##
# Handles the github: option from +options+ for gem +name+.
#
# Returns +true+ if the path option was handled.
def gem_github name, options # :nodoc:
return unless path = options.delete(:github)
options[:git] = "git://github.com/#{path}.git"
gem_git name, options
true
end
private :gem_github
##
# Handles the :group and :groups +options+ for the gem with the given
# +name+.
def gem_group name, options # :nodoc:
g = options.delete :group
all_groups = g ? Array(g) : []
groups = options.delete :groups
all_groups |= groups if groups
all_groups |= @current_groups if @current_groups
all_groups
end
private :gem_group
##
# Handles the path: option from +options+ for gem +name+.
#
# Returns +true+ if the path option was handled.
def gem_path name, options # :nodoc:
return unless directory = options.delete(:path)
pin_gem_source name, :path, directory
@vendor_set.add_vendor_gem name, directory
true
end
private :gem_path
##
# Handles the platforms: option from +options+. Returns true if the
# platform matches the current platform.
def gem_platforms options # :nodoc:
platform_names = Array(options.delete :platforms)
platform_names << @current_platform if @current_platform
return true if platform_names.empty?
platform_names.any? do |platform_name|
raise ArgumentError, "unknown platform #{platform_name.inspect}" unless
platform = PLATFORM_MAP[platform_name]
next false unless Gem::Platform.match platform
if engines = ENGINE_MAP[platform_name] then
next false unless engines.include? Gem.ruby_engine
end
case WINDOWS[platform_name]
when :only then
next false unless Gem.win_platform?
when :never then
next false if Gem.win_platform?
end
VERSION_MAP[platform_name].satisfied_by? Gem.ruby_version
end
end
private :gem_platforms
##
# Handles the require: option from +options+ and adds those files, or the
# default file to the require list for +name+.
def gem_requires name, options # :nodoc:
if options.include? :require then
if requires = options.delete(:require) then
@requires[name].concat Array requires
end
else
@requires[name] << name
end
end
private :gem_requires
##
# :category: Gem Dependencies DSL
#
# Block form for specifying gems from a git +repository+.
def git repository
@current_repository = repository
yield
ensure
@current_repository = nil
end
##
# Returns the basename of the file the dependencies were loaded from
def gem_deps_file # :nodoc:
File.basename @path
end
##
# :category: Gem Dependencies DSL
#
# Loads dependencies from a gemspec file.
def gemspec options = {}
name = options.delete(:name) || '{,*}'
path = options.delete(:path) || '.'
development_group = options.delete(:development_group) || :development
spec = find_gemspec name, path
groups = gem_group spec.name, {}
add_dependencies groups, spec.runtime_dependencies
groups << development_group
add_dependencies groups, spec.development_dependencies
gem_requires spec.name, options
end
##
# :category: Gem Dependencies DSL
# Block form for placing a dependency in the given +groups+.
def group *groups
@current_groups = groups
yield
ensure
@current_groups = nil
end
##
# Pins the gem +name+ to the given +source+. Adding a gem with the same
# name from a different +source+ will raise an exception.
def pin_gem_source name, type = :default, source = nil
source_description =
case type
when :default then '(default)'
when :path then "path: #{source}"
when :git then "git: #{source}"
else '(unknown)'
end
raise ArgumentError,
"duplicate source #{source_description} for gem #{name}" if
@gem_sources.fetch(name, source) != source
@gem_sources[name] = source
end
private :pin_gem_source
##
# :category: Gem Dependencies DSL
#
# Block form for restricting gems to a particular platform.
def platform what
@current_platform = what
yield
ensure
@current_platform = nil
end
##
# :category: Gem Dependencies DSL
#
# Block form for restricting gems to a particular platform.
alias :platforms :platform
##
# :category: Gem Dependencies DSL
# Restricts this gem dependencies file to the given ruby +version+. The
# +:engine+ options from Bundler are currently ignored.
def ruby version, options = {}
engine = options[:engine]
engine_version = options[:engine_version]
raise ArgumentError,
'you must specify engine_version along with the ruby engine' if
engine and not engine_version
unless RUBY_VERSION == version then
message = "Your Ruby version is #{RUBY_VERSION}, " +
"but your #{gem_deps_file} requires #{version}"
raise Gem::RubyVersionMismatch, message
end
if engine and engine != Gem.ruby_engine then
message = "Your ruby engine is #{Gem.ruby_engine}, " +
"but your #{gem_deps_file} requires #{engine}"
raise Gem::RubyVersionMismatch, message
end
if engine_version then
my_engine_version = Object.const_get "#{Gem.ruby_engine.upcase}_VERSION"
if engine_version != my_engine_version then
message =
"Your ruby engine version is #{Gem.ruby_engine} #{my_engine_version}, " +
"but your #{gem_deps_file} requires #{engine} #{engine_version}"
raise Gem::RubyVersionMismatch, message
end
end
return true
end
##
# :category: Gem Dependencies DSL
#
# Sets +url+ as a source for gems for this dependency API.
def source url
Gem.sources.clear if @default_sources
@default_sources = false
Gem.sources << url
end
# TODO: remove this typo name at RubyGems 3.0
Gem::RequestSet::GemDepedencyAPI = self # :nodoc:
end